Fluxim

Researchers from Empa, Sichuan University, National Tsing Hua University, Fluxim AG, ETH Zürich and the Slovak Academy of Sciences have shown that vertical phase segregation in ultra-thin PEDOT:PSS creates interfacial dipoles that limit flexible perovskite tandems, and that adding Triton X‑100 to PEDOT:PSS suppresses these dipoles and boosts device efficiency.

Flexible all-perovskite tandem solar cells (TSCs) hold great promise as lightweight, high-efficiency power sources for portable and aerospace applications. However, their performance and reproducibility have been constrained by losses at the interface of narrow-bandgap (NBG) sub-cells, particularly involving the commonly used hole-transport layer, poly(3,4‑ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS). The team found that ultra-thin PEDOT:PSS films naturally develop a vertically segregated structure: an insulating PSS-rich surface layer atop a conductive PEDOT-rich base. This vertical phase segregation creates interfacial electric dipoles that impede efficient hole extraction, leading to loss in current density, fill factor, and device uniformity.

Perovskite-Info and TechBlick have joined forces to present Perovskites Innovation Day, a free online event on April 4, designed for the entire perovskite industry. This online webinar is part of the Perovskite Connect 2025 event (with an in-person conference and exhibition which will take place on October 22-23 in Berlin, Germany). 

This online event is a must-attend for those involved in perovskites, with presentations from leading companies such as Microquanta, UtmoLight, Solaronix, Solaveni, Noctiluca, Fluxim, IIT Dharwad, Solra-PV, and Intellivation.

Perovskite-Info, in collaboration with TechBlick, invites the perovskite value chain and industry to attend the Perovskites Innovation Day—a free online event on April 4th.

This online event is essential for anyone in the perovskite space, featuring talks from industry leaders like Microquanta, UtmoLight, Solaronix, Solaveni, Noctiluca, Fluxim, IIT Dharwad, Solra-PV, and Intellivation.

Scientists from Imperial College London, the University of Surrey, the University of Nottingham, research institute UCL, Switzerland-based Fluxim and London South Bank University have designed a perovskite solar cell that integrates a ferrocene co-mediator interlayer at the interface between the spiro-OMeTAD hole transport layer (HTL) and the active perovskite material.

The team noted that the migration of lithium is critical in the degradation of spiro-OMeTAD-based devices, which is accelerated at higher temperatures, leading to the rapid degradation of the perovskite. The scientists described ferrocene as a sandwich structured material that is highly stable and can be used as a low-cost transition metal complex.

Leading simulation and measurement tool provider Fluxim and Perovskite-Info have teamed up to offer a 20% discount on Fluxim's large-area PV simulation software LAOSS.

LAOSS is a software tool that simulates large area semiconductor devices (PV and OLED), taking into account the voltage drop in the electrodes due to important resistive effects when the size of the device increases. LAOSS facilitates electrode layout optimization and material choice, which can save substantial time and resources. Any material class of PV devices can be modeled in a few clicks, from emerging technologies like perovskite and OPV to established Si or thin film technology.